One Answer:

Many mattress manufacturers have the same mattresses with different names. Then stores look as if they have an "exclusive" model. Try to check the specifications on each mattress to get a comparison.
The Scotgrove is online…
Simmons BeautyCool® Gel Lumbar Support and the firm comfort of the Scotgrove™ innerspring mattress by Simmons Beautyrest. This Pocketed Coil® design offers unique ventilated AirCool® BeautyEdge® foam encasement with Quantumlock® edge support working in tandem to provide conforming back support.
Looks like this mattress sells for around $800 in a Queen mattress.
Since our focus is on eco-friendly products, you might consider researching eco-friendly manufacturers with more transparent information so that you know exactly what you're getting. Otherwise, it can be very confusing for the consumer...